The Mercury Pro-XS is a good engine, but the 4 Strokes being made today are so good, there's really no reason to go with a 2 Stroke. The hole shots are as good or better depending on what prop you use, they're more fuel efficient, and they aren't nearly as heavy as they used to be. Plus, they just last longer and have fewer problems. My marine guy says he fixes 2 Stokes 4 to 1 over 4 Strokes and he's been in the business for 30 years.
Also, like another gent said, you don't have to worry about aluminum like you do glass, and being new to boating, it's one less thing to worry about. However, the aluminum boats today are far better than the aluminum boats of even 5 years ago. There has been a concerted effort by the boating industry to put more research and time into aluminum, and it's showed. My Xpress aluminum is top-notch and I've had so many guys at the dock or in-passing inquire into it. I can get into the back-waters on our rivers that the glass boats just can't get in to, which has helped me fill limits that I would've otherwise failed to fill on the crowded community holes. So, don't believe glass is superior to aluminum, they're just different, not better or worse.
You had mentioned getting 2 Talons to anchor your aluminum... That's not necessary, at all. Buy 1- 12 foot Talon and trust me, it'll suffice. Buying a 2nd anchor would only be aesthetically pleasing and a waste of money. If you really want to get tricky, buy an adjustable mounting plate, which will buy you almost another foot of anchoring capability. Plus, when going under bridges, etc, you'll have one less Talon to fold down... I've only owned Talons, so I can't speak on Power-Poles, but most guys I fish with and against have them, and some have owned both, with a preference toward the Talon.
I've used Lowrance and Humminbird electronics exclusively, with my latest purchase being the Mega-Imaging Humminbird and they're so clear, user friendly, and the goodies are just incredible. I've mapped some of our smaller lakes that were paper-mapped 30 years ago and they're nothing like they used to be; I've found so many great spots that have produced some great days. My buddy Chris has a couple Garmin Panoptix Units on his rig and they're so cool, with guys only just beginning to exploit their capabilities. They work in a similar fashion to the 360 Humminbird units but in "real time". The truth is, all the high-end units are great and you wouldn't go wrong purchasing any of them, so it's really just preference. I prefer the Humminbird units because of their Minn Kota compatibilites, so it works great as a "system" of finding and presenting lures to fish in the most efficient manner. That being said, the absolute most important thing regarding electronics is learning how to properly use them, period. Most guys don't understand how to use them properly, so it's just a waste of money.
All in all, think about building your rig as a fishing "system" because that's really what it is, a means to find and catch fish by being efficient. If you're going to make a large investment in an aluminum boat, electronics, anchors, an on-board charging setup, etc..., you're looking at 30k give or take a few thousand, so take the time and do your research because it'll help you become a better angler.
A few things you'll want to make sure you have on your new boat:
1. A recessed trolling motor pedal 2. Rod lockers that accommodate 8 foot rods 3. An auto bilge pump 4. A live-well system with all the bells and whistle (if you're going to fish tourneys) 5. A hydraulic jack plate 6. An on-board charging system 7. Lockable storage (especially the rod lockers/tackle storage). 8. A top-notch insurance policy (don't skimp, trust me) 9. LED lights in your storage areas (a must have for early mornings or night fishing) 10. A power-trim switch, anchor switch, and livewell switches on your front console, 11. Put a bigger graph on the bow of your boat, 12. If you're serious about becoming a better angler, buy units with mapping (card compatible), Side-Imaging, Down-Imaging, 360-Imaging (if you go Humminbird), and traditional 2-D sonar 13. Buy high quality trolling batteries (so worth it) 14. Shallow water anchor 15. Trailer brakes 16. Keel guard (especially on a glass boat) 17. Swimming/safety ladder (can save your life) 18. High qualith PFD (don't skimp) 19. Full range of console gauges 20. A 36 volt, high powered trolling motor so you have no control issues... Anything you can think of that you want or need... This will certainly add to the price of your boat, but it'll also increase your fishing success, your comfort, and the fishability of your rig. Buying a boat is a rather large investment, so do it right. Good luck brother!