You can go str8 to str8's
I think str8 shaving is like motorcycles--they are not for everyone and you know it when it is for you.
I went via the DE route but only for 1 month. I knew I wanted to be a str8 shaver as soon as I read about. Just took me a month get the razor.
I got more nicks and cuts with a DE first shave than my first str8 shave. One reason is overconfidence in the "safety" part of "safety razor". Straight has no such false advertizing. It is a "cut throat razor" so instills caution from the get go.
The DE is really an unnecessary cost if you are heading to a str8 anyway and the only reason I don't regret getting a DE is because I still need it to shave my head. (my avatar is really a self portrait caricature)