You'll get it done, we are still two solid months away from trip time.
Here is a way to make sure it is ridable -- when you are three weeks out, stop changing things and concentrate just on finishing up what you have in motion at that time. Call it Beta Test version 1.0 in your mind, the proof of concept model, the one that is not expected to be totally complete in all aspects. Cosmetics be dammed, will it ride OK?
You may not have everything diced the way you finally want it, but let me tell you a secret -- it will NEVER be totally the way you want it because what you want will change on you periodically.
Now, a question ..... if this is a cafe you are building, how did you go about making it comfortable enough to ride hard for 4 hours at a lick?
Bring it on the trip, definitely, because you need to learn something that the trip will be able to teach you --
before you finish building it all the way to "painted beautiful".
You see, you gots to build in some ride-ability and some comfort or else you are building another "looks good" garage toy that can only run up to the bar and back before it starts killing your butt/back/wrists/shoulders etc.