Boeing 737-800

I have a few questions dedicated to this plane

Whats the max range with full fuel?

What is the max altitude so I can good economy with the fuel so it will last longer

What is the flap speed limits for flap settings of 15 and below

Thanks if anyone can answer these questions for me

By the way I'm using the POSKY 737-800 but I have a feeling that the answers would be the same no matter what 738 I'm using

This won't answer all of your questions but I hope it helps.
www.b737.org.uk/techspecsdetailed.htm

Thanks that link was a great help

Also take a look at PMDG documentation for the B737-800, you can view/download it for free.

www.precisionmanuals.com/html/downloads/docs.htm