Since your budget is on the low end for bespoke, get what you can - your choices are limited on fabrics and materials, get the best quality wool/silk/linen you can for the money.
Just get whatever colors look good on you, have a little bit of design to them and make sure they are slender cut as opposed to the traditional sack suit
Fitment is the most important thing. Other than that, you really have to work with your tailor for what he can do for your price range - because most bespoke suits you have to drop at least 3k to unlock the wide range of fabrics.
some italian, german, and japanese ones; and on order more of the same