Thats a very tight budget, i'd try and give them flexibility and upgradability so when the place starts doing well (hopefully because of the music) the owner has some chance to come back for more.
For basic music try the EV Evids, Hornydragon has used them and thinks they are pretty good for the price. They come is loads of versions,
here. I'd go for the 100V versions as it saves you worrying about impedance etc.
Then look at something like
this to drive them. You can also add a remote volume behind the bar.
Cable for subs etc so when the owner is ready simpey add another power amp and some subs.
If this is still too much for the budget you are going to have to have to take a trip to richer sounds and get some JBL control 1s (not the proper versions mind) and a big hiFi amp, not ideal and likely to cause you probs longer term. 2k is sooooo low.....
Dupe...