Good advice from Mick. You wont go wrong following it. Allow me to add a point or two.
You have selected a spinjig blank. A medium power spin blank is usually equivalent to a med- light power casting blank. The NMB843 may be a better choice for an all around casting blank. Call Mudhole and ask them.
The Fuji ACS seat is not well liked. If you have a rod with that seat, and you like it, go ahead and use it. I find it to be very uncomfortable. Many do. I think it depends on hand size, and how you hold it while retrieving.
For my money, the most comfortable casting seat out there right now is the Fuji PTS seat. You will need a Fuji Perfect Fit carbon fiber insert tube, which is epoxied into the seat, and an arbor to glue inside the tube. If you want a foregrip, buy the seat with the hidden thread hood.Fuji also makes other Perfect Fit pieces togo with this seat. Get the carbon fiber sleeve to go over the hidden thread hood, and the cap and base trim rings to set it off. You may also like a trim ring to fit at the back end of the reel seat. Mudhole can help you with this. Give them a call. They have some helpful, knowledgable people. Also, you are going with the ACS or ECS reel seat tell them where, on the blank, you want the reel seat to fit. They will then send you the correct size seat for your build.
About guides; nine would be about right for that blank. Get one more just to be sure. I use all BLAG guides for most of my builds. I keep sizes 6, 5.5, 5, 4.5, and 4 in stock. For your build I would use a 5.5 first, the one 5, and the rest 4.5. A 4.5 will pass a well tied leader knot. Also a BFCAT tip guides. For the blank you selected get a tip with a 5.0 tube size. The tip size listed in the rod specs is the tube size for the tip guide.
if memory serves, the grips you selected have a 3/8” bore. This will need to be larger. These can be difficult to ream by hand, and remain concentric. Here’s a tip. Use drill bit 1/32” larger than the original hole. Do not chuck the bit up in a drill. Twist it through slowly by hand. Then increase drill bit size by 1/32”. Repeat until you get it to fit. I go a bit larger then use a thread wrap or drywall tape to fill the gap. By drilling without a drill, your bore hole will remain in the center of the grip(concentric).
good luck.