elbows

Looking to move a 3" waste drain over to the 21-22" mark shown in the first image so it's not so close to the wall. 2nd floor, no waste above this level. Plan to elbow through the 2x10, and then back up to the toilet. A street elbow and a two hub elbow puts the flange about where I'd want it...

I have this at home: https://www.ebay.co.uk/itm/Tangit-125-Gr-Sticker-Glue-Special-Henkel-Pipes-PVC-ABS-Wallcovering-Repair-Seal-/163993385693?_trksid=p2349526.m4383.l4275.c10 and I need to solvent-weld these abs drain piping...

Hello, At my cottage the main supply line from the pressure tank (30-50 psi range) is 1/2" pex which runs about 30 feet, no elbows etc., before it splits to hot and cold supply lines. In the current setup I am happy with the pressure at all faucets, shower etc. I am considering a renovation...