You'd be cutting it pretty close, assuming you have most, if not all your attacking skills maxed. I reckon you might have anywhere between 2-5 mins spare. I remember I solo'd hilla with like a 36k buffed range iirc.
EDIT: Honestly, once you get to 170 and get Beyonder Blade, it makes life SOOOOOOOOO much easier for an Aran. Right now with 61k buffed range, 50% boss (includes all passives + Character cards, DS link), i can solo between 6-8 mins.
Well, your range is almost exactly the same as my kaisers, and i can solo her with about 10mins to spare...then again, i'm a kaiser
I'd say just try it. You'll never know for sure until you give it a shot