Cheers lads, i think the second option is a little more practical! I never thought to record a click then cut it where i want to slow down,i record guitar first and then bass so once i have those down then i can add drums and thats the main foundation sorted,i did find this , i cant actually open it on this tablet im searching on but im assuming " user defined metronome " means you can do exactly what i required, the reaper metronome should have this functionality really, im guessing its a common problem, thanks
https://www.kvraudio.com/forum/viewtopic.php?p=7042288