The Beck Group published their Summer 2021 Cost Report and here's their latest market cost analysis for faith-based new construction. If the Paradox project is 30,000 SQFT, I would expect their phase 1 budget not including the cost of finishing out the AV, sitework and surface parking lot next door to be in the range of:
$10,500,000 to $12,840,000. I think you could easily add another $500K - $1M for those items not included especially if there is a nicer site lighting / landscape lighting package or any specialty exterior lighting package needed. I had originally guessed overall cost to complete at $10-15M here.
Phase I Surface Parking Cost Analysis. For Phase II, I don't recall how many proposed parking spaces they need but there would also be a skybridge connecting to the church and an educational / office space so it's too hard to tell scope of work, but here's the cost factors for Summer 2021. Their drawings presented to DDRB show 114 surface parking lot spaces:
$464,664 - $567,948 if they go with concrete. Bituminous would probably be the cheaper option if they plan to tear this up in a couple of years to build a garage but check out how expensive parking garage construction is (based on cost per space) assuming they could fit around 400 spaces at $20,000 per space = $8,000,000 on the low end.