Myself I would tend to think that if he was able to make such a long cast successfully in order to put the tape on it, he wouldn't need the tape at all. Otherwise after a cast like that he'd have one heck of a monster backlash to fight before he could even install the tape.
Also, I'd say get a 6' rod to start with. I find the shorter rod way more comfortable to cast with. Since your primary goal is to learn to cast it and have some success fishing with it while doing so, then a 6' rod would work better, for me anyway. It's true that a longer rod will provide more momentum when casting and will throw the lure farther, but what good will it do you if you have huge backlashes to fight after the cast?? More momentum means a faster moving spool and the line coming off faster also. If you aren't on the spool good with your thumb then I think you'll have a lot of trouble.
Also a longer rod means more chance of doing stupid stuff (that I sometimes still do :) such as hitting the ground as you come around on a side arm cast, or hitting low hanging tree limbs as you cast overhead. You start to make a cast with a 3/8 oz. spinnerbait, let it hit a bush nearby and you'll think you've never really had a backlash before that. It'll be worse looking inside that reel than the bush the rod tip just smacked!! Shorter rods are just easier to use in general I think. They're not as tip heavy with the lure hanging down it seems cause of the shorter length, and therefore it's just easier to cast with them. That's my experience anyway. I try to use a 6' rod for anything I cast if possible, just for comfort reasons. I can cast a baitcaster pretty well on average, but I still opt for 6' anytime I can.
By the way, I was at Dick's today and saw the Field & Stream rods. They had 2 different ones. One was an IM6 and it was on sale for $25 I think. It's red in color and has stainless steel guides I believe. Is that the one you're looking at??
The other is an IM7 rod by Field & Stream, called the Angler series, and it has much better guides on it, the Fuji aluminum oxide guides, concept spacing, and a Fuji reel seat (all of which the other one doesn't have). Overall it felt much better to me than the other one did, and it was only $40 on sale also, usually $50. Not a huge jump up in price but I think it's a much better rod overall than the first one is, it compares to the Quest LS-7 I bought there last year, really it feels like the same rod with a different name on it, but blue instead of maroon. I'd buy one in a minute if I needed one. They're nice. Didn't see any 2 piece rods though, and I was looking cause I remembered you wanted one.
They sure did have some nice rods there though. I checked out the All Star Select rods for $60 and they're really nice. Also the St. Croix Triumph, was on sale for $70 and it felt fantastic, but it's a bit high for your needs right now. I might be moving into one of those though in the future, that was a really nice spinning rod, felt very sensitive and light. Never knew they were that nice, I never have seen one before.