Firstly, please rotate your CT spawn! The flow of a map is really important and starting it with a compulsory 90° turn might not seem like a huge deal, but also unnecessary.
In fact, I think most of this map's problems stem from his it flows: the route towards A as T makes you backtrack slightly, and the route towards B has you turn away from the site to then turn 180 back on yourself.
If timing is an issue, you'll need to move things about as just making people zig zag to kill time is frustrating to the player.
The map is wider than it is long so immediately channels people off and doesn't leave much space for a useful mid that doesn't have long connectors.
I've suggested a couple of adjustments to your current mid but I think you should consider combining your "pre-mid" and mid together and slim them down.
The pre-mid area is too safe for Ts, they can freely rotate if blocked from a site without taking a time punishment via spawn, or a faster/higher risk route through mid.
Hopefully that all makes sense!