I want to run GB1,2 not only in this game, is "Super Game Boy" allowed to use? "Super Game Boy" runs a little faster, but with "Super Game Boy 2", it runs the same. Execution will be SNES.

Usually 'Super Game Boy' is banned in most communities, but 'Super Game Boy 2' is fine. Personally i'm fine with allowing it (SGB1), if the completed times are multiplied by a factor of '1.024116'. Which is easy to do with this handy tool from Nudua: https://nudua.com/convert. But i'm no moderator, and there might be other problems with SGB i don't know about.

It'll be up to Tagerplayer and Mergy to make the decision.

The standard on the majority of GB boards is that SGB1 is allowed as long as you provide the original time and the converted time using the website converter linked here >converter< in the description of your run.

Both of the mods agree that "Super Game Boy 2" or SGB2 is allowed, so you are good on that.

We are not quite decided yet on SGB1(Super Game Boy 1) right now, we are talking about it.