Tippet size is best determined by fly size. Unless you're enjoying size 20 noseeums there's about zero reason to use 7x.
Size 12 flies are suited for 4x tippet. You'll find that 5x is generic enough to cover most anything. Since I started going out again, I only carry 4x and 5x anymore.
As for indicators, I might be alone in this opinion but I actually think the sticky-backed foam ones are the ones to start with. It takes a lot to get them to move no matter how spastic your casting is, eventually you'll refine everything and then I'd try ones like yarn or the llttle bobbers or whatever your thing is.
I rarely fish weighted flies, but like Bamboozle prefer the putty. I tend to put three tiny blobs spaced out, usually around knots in the leader, as a way to watch for the leader movign when fishing wet flies up or across.