I would invest in getting protools (and the hardware required to use it)
Make sure you're using balanced cables to reduce noise
Im not sure what your mics are like because you've only included the brand name.
Make sure you know what your different mics are good for, one mic doesn't fit all.
e.g. an AKG C1000 is good as an overhead drum mic, and is also good as a vocal mic or recording an accoustic guitar, yet if you stick it infront of an electric guitar amp you're likely to break it.
Shure SM57 is good for snare drum, and recording electric guitar from an amp... put it infront of an accoustic guitar and you'll probably struggle to hear. Some people use it for vocals cos it has a more "rocky" sound but generally speaking you'd want a condenser mic for vocals for a "studio finished" sound
Lastly, a really important thing is to understand the signal paths of all your inputs. This is a huge help not only in just generally knowing what you're doing but it helps mixing as well. Once you understand your signal paths you cant go wrong.
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edit: sorry, i posted before the aditional information.
As long as you show that you know what you are doing musicians generally shouldn't care what settup you have.
Of course they feel safer if they see a huge mixing desk and the latest protools settup, but if the producer didnt have a clue how to use it they'd quickly loose confidence.
Just make sure to explain things clearly to them. For example, if they're wanting to use some obscure effects pedal on their guitar, but you don't want them to because you can put the effect in later in cubase and want to leave your options open for mixing then make sure they understand. don't just say "no, dont use it" etc.