Modular Synth Panels

Hi everyone, my first time to consider having my own panels made. I am going with 5U unless someone can talk me into MU. still comming to terms with FPD...are there any designing advice for a beginner. other questions are why are some 5u panels have rounded corners? Also is this viable to design your own panel for having Oakley or motm style modules. Plus I would like to have Dotcom style knobs on 5u simply because i like them. Is that possible without any problems I would also like to have better detail around pots/knobs than motm style. Some Motm style have no legending around knobs at all except positive and neg symbols. Basically what i intend is to have something similar to dotcom text/graphics on 5U panels with dotcom knobs if thats doable? any advice please would be appreciated. Plus the idea of a FPD price for a one off panel?

thanks aliis