Sizing Trim Tabs and Turn Fins

[GeckoDragon]

Back again! I'm finishing up the electric conversion on my old Prather 46" Deep Vee, and I'm thinking fins and tabs will be a must. She ran well without them on the 25cc gas engine, but with the electronics I've put in I think I'll need it. Stuck in a Castle Hydra XLX2, TP Power 5870 900Kv motor, and 8s 10000mAh for battery. I've found some information digging through old forum posts, but am wondering if anyone has some more current advice for picking tabs and fins?
Thanks!

[fweasel]

Turn fins on a hull that size would likely be about 2.5-3" long. Trim tabs about 2" long. Mount the bottom of the trim tabs about 3mm up from being flush with the hull. I don't race, and adjust most of my tabs with a positive trim angle.