got the Class(10%) and alliance(5%) bonus. along with a 55.45% kaelesh enhancement. (playing on a server with +30 fields)
I have tried 150-200 times now, and the biggest planets i have found on position 8 is only 379(found twice so far)
I know Fields =( planet diameter/1000)^2, and that the colonization bonus is applied to the planet diameter.
position 8 have a max of 252 field, translating to a planet diameter of sqrt(252)*1000 = 15874.5, applying a 20.5% total bonus to the diameter should result in a new max size of about 19128.
(19128/1000)^2= 365 fields +30 universe bonus for 395
Is there a hidden limit in the code or am i just unlucky so far, seeing nothing closer than 16 from the theoretical?