there's a good chance that I had the hdmi cable come out of the ceiling not sufficiently far from the screen wall, hence I might need an extension so that I can place the pj further back.

Are there issues with using extensions ? apart from aesthetical ones of course.

thx !

Any problems will quickly become evident. You'll see "sparklies" or have the picture drop out if the HDMI cable doesn't work.

thx, that is exactly what I heard later today from my main cables source :) I guess it's good news in the sense that I will know pretty much for sure and in case, think of another solution.

I know that for HDMI, 50 feet is generally the longest you can get and have it work reliably. Any longer, and you will need to get a signal booster