The thing is that most of the apartments in the building (with no renovation) of this size are sold for 285-300 range in the last 6 months (of course higher in 2006-2008), they are usually listed as 2 bedrooms, and the room downstairs is listed as dining room.

We are professional property managers, we have a long successful history of buy and hold investing, we have great credit and sufficient income.

While I like your property and the asking price seems reasonable, the specific terms of the contract do not allow me room to conduct sufficient due diligence on the property. 

The only place you'll find a better resource is by going to your local building supplies store and filling in the numbers where the books have ranges.  

Faster down on the front range :-)

Mark has utilized his diverse background to facilitate and advise the launch of many successful business start-ups in fields ranging from multi-family housing to specialty food and apparel manufacturing.

So here is a sample scenario:$60,000 purchase price25% down = $15k, advanced from the line of credit$45k purchase money loan based upon the value of the homeThe loan rate for the purchase money would be around 5-5.25%, the line of credit rate would be in the 5.25%-5.50% range.

I have seen a few on LoopNet that have caps in the 7 range. 

If you are participating in a good flip and it produces a 35% gross profit, the net after-UBIT gain to the IRA would be in the range of 21-23%.  

That is the NYC commute range people do.