Hejsan brickboard
So I have a run of the mill 88 DL. I've currently got a cock and a voltmeter filling the two gauge holes to the right of the cluster. I've been sitting on a couple of turbo gauge pods and since it isn't a turbo I've been waiting to score another gauge. I now have an Oil Temp and am ready to install it with Oil Pressure and Voltmeter (from left to right in that order). My electric skills are basic but looking at the turbo gauge wiring harness I drew this diagram of what my plan is:



My Questions are as follows:

1.I ripped the Oil Pressure Sender from an 83 (or close). It's a 5-bar and I have the elbow, can this create any installation/compatibility problems (for an 88)?
2.Does my wiring plan look right? I know the Turbo doesn't share the same Red/Blue positive wire as the other two- but would three gauges be too much for the one wire?
3. When I grabbed the oil senders I didn't grab the wires or really note where they were routed. Does any know of a proper route?
4.Are there any important problems I might run into?