Thanks for all the comments. These still brig some more questions though.
1. We prefer smaller boat because its easy to handle single handed and i assume its similar with the 5er, or am i wrong ?
2. Being inside doesn't bother us. As i said we are used to it, we usually end up in different corner working when we can't be out. Only problem for us is that i like to have several things at the same time (eg. have tv on in the bg. while working) while my gf she loves quiet. But we always make it work ;-). Layout is important for us, what i like is having open space living/dining/kitchen and separate bedroom. which i think we will go for so she can be in the bedroom when need arises.
3. Generator - why would you chose external, what are the benefits. for internal i got theft protection, integration in to storage, connectivity to existing wiring (no need to connect the outlet - this is assumption) and control from inside. But what are the benefits of external one ?
4.I just had quick look for smaller TV (2500) but the price is almost identical to 3500 with roughly same mileage and year so what would be the reason not to go for my original choice ?
I know i am annoying with all these questions, but i would like to get as much info as i can before i make the decision.
Btw if any of you need help with boats let me know :-) thats where i am strong at :-)))