612" bbf timing

Hey guys, just looking for some thoughts from some of you who have experience with similar deals to see if we are on the right track. 612" (4.6x4.6), 6.8 rod, ~15:1 compression, profiler heads from TRE 528 cfm @ .900, sheetmetal intake with two prosyatems dominators on q16, cam I think is .890 lift and I want to say 288/306 @ .050 and I think 116 lsa. Just curious what to use for a starting point from timing, and where you'd guess it would perform best. Obviously, well test n tune to figure it out, but our builder thinks it should work well at 26-28*, my brother and I think 31-32* is more realistic. What you say?

either of those could be close, depending on how good the heads work with that cam,and intake,but really should dyno it

Because of the unique properties of Q16, 28-30 is probably going to be peak power. On non oxygenate fuel its probably best about 32.

Interesting about the q16. I was thinking about that the other day and was thinking that Q would possibly require less timing, but I don't have the tuning experience to have seen it first hand. Appreciate the replies guys.
P.s. I definitely agree it should be dynoed and it will be this offseason.