Bad advise
I don’t know why peoples like swell body so much, for me it is only for sole purpose for farming, and exp given is not that good with nowadays a lot of bonus %, the extra exp doesn’t multiplied by those bonus %. There is a lot of ways that can farm silvers faster without swelling
Even for farming, i think 10-12 are enough for swell body and that is for FF build specific on DPK mats.
I prefer shrink-body actually for that +120% additional damage.
Transpose at lv1 offer a lot of utility and strategy, it can use in Animus trick for 700+ M.Amp which is average equals to 350+ Matk (cheap solution to counter coming practo 315 accessories), transpose for CON will allow red pot to heal up a lot faster can be a temporary tanker with swell right arm +def/mdef.
Lifeline with CON will give firm assurance in big fight such as earth tower and world boss.
By sacrificing 1 point from swell body into transpose will give u above all.