Or just go try your uncle model M again?
How customizable are older boards? I love customizing stuff (Which is why I'm going for a Poker) and I'm not sure how easy that would be.
Welcome and prepare to spend massive amounts of time drooling over keyboards!
Gotta start carrying a charger to classes.
For sure the customization is way reduced with a model M/F. Keycaps will be limited even if unicomp can make some nice ones for a nice price, but still it's nothing compared to all the group buys for MX stuff.
As for the keyboard itself, you will have a harder time finding a specific layout but at the same time if you are ready to try to mod it with a lot of elbow grease then you can make some very nice layouts out of the different base layouts you will find.
BUT, using a Soarer converter (for example) you will be able to remap all keys and configure layers so it takes a normal layout and increase the possibilities by A LOT. And there has been some awesome works recently to make some completely new controllers for the Model F and the likes and I know someone also made a custom model F pcb, so there is light for full custom mode F in the future even if not for now.
In the end it all depends on what you prefer in a keyboard. But trying the different switches is a nice experience in itself. I have myself to try many many switches I didn't have the opportunity to try yet (topre and many different cherry and alps switches and hall effect and beamspring etc.)
So if you are set on the poker, don't hesitate and if you have the opportunity to try new switches do so since it's fun in itself. Just hard for the budget if you fall in love with another switch after acquiring many keyboards with a specific switch.
This forum is not called wallet hack for nothing!