would this

https://www.rx7club.com/group-buy-center-69/zeal-engineering-plugnplay-megasquirt-group-buy-533404/

be much better for a Stage 3 or 4 according to Ted
http://fc3spro.com/TECH/FM2W/power.htm

or would a rtek 1.7 or 2 suffice?

Plans are doing moderate upgrades w/

720 secondaries
BNR 2nd
walboro 255
FPR
Koyo
FMIC

also if i were to get the standalone, would i still need a SAFC?

sorry if the question is kinda gay, but just drawing up my shopping list and checking it twice.