Well my young friend, if technology were your only concern, then I’d say you are totally ready. However, good technical skills are only (the smallest) part of the equation. Music selection is, imho, a bigger part. And that is something that can’t really be learned practicing. Sure, you can practice what sounds good together and what doesn’t, but what works well with the crowd or not, needs a crowd to determine.
Crowd-reading skills and consequent programming can only be done playing out. And, assuming a first night or two of a new genre won’t be packed house, this sounds like a nice place to start.
The dangers are obvious, you might not fill the room (in which case the owner won’t be impressed and probably pull the plug after a few tries :-), you might find out you need more live practice yet to be able to please a crowd, etx.
But, as you need to learn to walk by first getting on your feet, at least you will have gotten up and set your first few steps. Experience the first time jitters, see what happens with the mood when you play certain songs, get all the funny requests and have idiots come and criticize your gear (don’t worry about it, use what you are comfortable with).
So, yeah, go offer the owner your services, perhaps make him a deal based on the numbers of visitors to the function room or something. That way his risk is lower and you get paid more or less depending on how well you do. Remember, venues (regardless of the type) are there for only one reason and that is to make profit selling drinks. More people that stay longer means more drinks sold. Make that happen for an owner and he will fall in love with you :-).
Greetinx.