I had about the same situation as you in my 30gl. AC70, Topfin 30, Angelfish, SAE, 2 ottos, 8 rosie tetras.
I don't think you're stocking is too high, but like me you might end up getting a taller tank for your angelfish if your water measures around ~16" depth. My long fin is in a 24" high 65gl now, his dorsal veils were curling down pretty bad in the 30 once he started growing and the plant mass was tight, now they're fine.
I always found the AC70 to be too powerful, even if I ran it alone. But I like two HOBs over two diffusers on this tank, so I replaced it with a Red sea nano type HOB and I still use the Topfin 30, they both practically trickle at times after stuffing them with sponge and bio media. Canister would be nice and probably ideal... I'd still leave my tricklers on though for future projects
My advice would be to either transfer the AC110's media into a smaller cheapo filter to assure you don't have a mini cycle, or just stuff the intake with sponge until it slows down, and maintain it until you get the canister and can transfer the media. Keep the 110 handy for cleanup day, it's nice to hang it on the front after planting or rescaping, to polish the water up faster, I usually just run it with the sponge insert when I do that to make it go faster.