The detail textures are optional. More on that here: http://twhl.info/tutorial.php?id=159
The missing bitmap font is not a mapping problem. I guess there are no fonts specificaly for the 1920px resolution. Maybe it then uses 1280px or 1600px fonts. You should have that error in regular SC too. It will do no harm to your game experience.
Code:
'Warning: Unable to open maps/soundcache/SC_testmap.txt for transfer
Error: server failed to transmit file 'maps/soundcache/SC_testmap.txt'
This happens because you load the map straight from Hammer. It then starts SC in singleplayer mode, which leads to problems. Before compiling, tick the box 'Don't run the game'. Compile and wait till it's done, then manually open SC, start a new LAN server with your map and it should all work.
Ultimatly, I'd recommend you to learn how to use Expert compiling mode, so you can use useful parameters to make your maps look better or compile better.