Unfortunately, a corner is also not ideal. Bass tends to collect there. Mine is pretty close to the corner (big room though). I put a Silent Running Audio isolation platform under it and it is a very high quality sprung table, so it works.
I don’t know if you have done much experimentation with your front wall, and imaging. I would do some. Find something around the house to simulate the blockage.
If you don’t mind bending over… if you keep the table really low then that is probably the safest bet. Stuff only screws up imaging as high as it is. I recently pulled my amp further out in the room and put pillows behind it and this improved and deepened imaging. I guess monoblocks are best.. so you can locat next to the speakers… there are alway compromises.