Hi I am running a GQ patrol wagon with a TD42 N/A on a stock alternator with the vacuum attached to the back of it...

My question lies in the upgade of this alternator...

I have a winch that draws 4.5kw and a air compressor that starts up at 90A...I am looking to fit a pile of LED lamps around the rig and willbe eventually running a 40l Engle and extra battery on DCDC+solar...
I wonder how this lil power plant will handle the load if put to the test( not likely all will run at once but if in situation act of God...)

What is the most out put I can get out of an Alernator on the TD42?
Is the Alternator I have only 80A?
What are the recomended brands/tried n tested?
Is it worth going big on the alternator or has anyone? and thoughts on getting a separate/electric vacuum pump?

Many thanks in advance