You will never find the perfect deal, there will always be better but its better to just go then to wait for mr perfect.I'm a newer investor myself with 9 doors across the midwest markets.

Another 3/1 in better condition, all full height rooms maybe 2500 - 3 k. 

or is it better to use a private money lender as well?

As you gain volume in sending them clients (inevitable as you grow) you will be able to negotiate a better price, or at least avoid increases.

But I have always felt better with my relationship directly to a lender.

As you gain volume in sending them clients (inevitable as you grow) you will be able to negotiate a better price, or at least avoid increases.

What can it do for me that I can't do better myself?

Better to make connections on here or a local real estate group. 

the other option i have is build a 3 car garage and out a one bedroom apartment on top that ill rent for about $1500 a month.The garage price would be about 100k to fo but could make 18k a year.The land is $130kWhat do you all think is the better strategy?

I would instead focus on the scope of the project (e.g. some handymen are better at painting, some are better at flooring).