If you don’t qualify for conquest, and are not able to get the dealer fee reduced, you should try for 10% of msrp before incentives. Maybe try for an OL Code to get another $500.
With that, this would be a reasonable target assuming a 9% tax rate, change if different: leasehackr.com/calculator?make=BMW&miles=10000&msd=7&msrp=60110&sales_price=54099&months=36&mf=.00145&dp=0&dealer_fee=598&acq_fee=925&taxed_inc=0&untaxed_inc=1000&rebate=366&resP=61®_fee=185&sales_tax=9&demo_mileage=0&memo=&monthlyTax_radio=true
If not, I’d suggest using a broker on this site for a fee.
Or I could get you in touch with my contact at BMW of Reading. PM me for details.
Good luck!