I don't see any issues with the connections except that there is no bypass capacitor indicated for the SN74LS374 (the part # has a typo in the schematic, replacing LS with SL).
Looking in the datasheet for the processor, I found that Port 0 is open…
To avoid the bus contention, you need to use a flip-flop that can disable its outputs by itself, such as the SN74LS374. (The '245 is then not needed.)
Alternatively, add series resistors to the D outputs so that the A outputs are stronger and can…