There's a lot for your tuner to factor into your horsepower rating. With all of that said, and a healthy block with good compression, I see making about 220whp (just an estimate!) on the high side of 6-8lbs of boost. That will be okay for a bit, so long as you don't drive the car hard all the time. Here was my setup, which made 320whp/285tq:
95 Integra LS b18b at 9:5:1 Compression ratio
Golden Eagle Rods
Golden Eagle Rod Pins/Wrist Pins
OEM Pistons (didn't even think these would mate to the rods, but low and behold they did. You can thank the PO for not replacing the pistons...)
Cometic head gasket/exhaust manifold gasket
ARP head studs
Cast iron log-style manifold
Turbonetics Deltagate II wastegate, set at 1bar
HKS SSQV BOV with 12lb spring
AiR Research (essentially the same as Garrett, with some minor changes) t28 turbo, .64AR Turbine housing, 5 bolt 2.5in downpipe with flexpipe welded
Full 3in exhaust, no cat, magnaflow muffler (OEM style, 3in inlet and outlet)
2.5in charge piping, 3 row FMIC
440cc RC Injectors (I really should have gone bigger, but wanted OEM reliability with a better nozzle)
OEM fuel rail, polished
Fuel pressure regulator
Stock intake manifold and stock throttle body (was going to go with Skunk2 IM and 80mm TB)
p74 OBD1 LS ECU running Chrome with dyno-tuned basemaps
Exedy Stage 2 Cerametallic cluth
I had it dyno tuned at a buddy's shop here in my hometown (I don't even know if they're still in business.. they were called J&J Performance. Tuners were okay, service was great, and their mechanics were really good). It took em three runs or so to get the tune down, at 11lbs. The car made reliable, safe power, and I was handing V8's their asses regularly. Fuel economy took a s**t while in boost though lol. 22mpg when driving conservatively, when I decided to get buck wild it went to like 11-13mpg.
All in all, if you're investing that much money, build your bottom end up a bit and do it right. As you can see, with my half-assed build (once again, thanks to PO. Bought it from him half-built), you can make decent power, but if I were to go the full route like I should have, and gone with Godzilla sleeves, domed pistons, bigger injectors, intake manifold, throttle body etc., I would have made a good amount more.. maybe close to 400whp, who knows.
TL;DR: I had a very similar setup to you, with more bottom end work, and make your goal. You're gonna need a bit more to make 300+whp on a daily.
