I'm showing my age... VCR=Vehicle Control Rig. 5th Edition just calls it Control Rig
For initiative dice, you have three approaches that I'd consider viable options.
1: leave it as is. Cold sim gives you +3d6 and Hot sim gives you +4d6... if you're counting on being jumped into vehicles/drones anyway during crisis situations, VR is giving you a chunky init bonus for free. You could save resources for other things.
2: spend some of your resources on augmentations to increase reaction, initiative, and/or initiative dice. I'm a fan of Reaction Enhancers for Riggers. Reaction helps initiative AND your piloting skills! Added bonus, if you get wired reflexes too, the combination of the two specifically calls out being able to go beyond the augmented bonus cap of +4 to your Reaction! I wouldn't go beyond Wired Reflexes 1, however. Remember VR gives a lot of bonus dice, and your hard cap no matter what on initiative dice is 5.
3: Variant on 1: Leave as is, and count on edge when you REALLY need to get a high initiative score. If you really only need 5 dice once per shadowrun (or maybe even once per several runs) it may be most efficient to just spend an edge point to "blitz" and get 5 dice automatically in those rare/intermittent situations.
Gunnery:
You've got a specialization and smartlink... you're pretty well optimized there. Something you might do is find some augmentations for Agility, which you'll still use while Jumped In or controlling remotely. Cyberware tends to be cheaper in nuyen, while Bioware tends to be cheaper in essence.
Truck and RCC: Honestly it's a matter of taste. My advice would be to not spend "too much" of your resources into just those two items. Consider how screwed you'd be if they got lost/destroyed, and hedge your spending accordingly
A nice high rating Commlink is a perfectly good backup to your RCC for remotely running/jumping into your drones, and a fairly basic vehicle that won't turn heads is great to have (and you can afford to lose!)
