Don't bother buying flare comp as cyber; get it as an adept power. Get a rangefinder instead; it works much better with the SLII.
If your GM allows Body Index and Essence loss to stack for Magic loss, get Enhanced Articulation. +1 die to every physical task and +1 Reaction is a lot of bang for your buck. A datajack is also something to consider; it opens up all sorts of technical skills and abilities to you.
As everyone else has pointed out, contacts are always a good idea. You can never have too many contacts.
Don't neglect lifestyles! Pay up a few months on a middle one, then buy yourself at least 1 permanent squatter lifestyle as a bolt-hole-- more, if you can afford it. At 10k

a pop, they're well worth it as extra safehouses.
Invest in a few credsticks. Each one is effectively a fake ID for you, so you want to have at least two. Again, more is better: get a mid-rating one for everyday use, several low-rating ones for throwaway transactions, and one high-rating one for when you really need to hide.
Communication gear is always nice. If you can afford a micro-tranciever with subvocal mike and encryption, you'll be more effective in the field. If you go cyber, get the phone option, but also buy up your encryption. Also, buy yourself a few pocket phones for throwaway use. While you're at it, buy yourself a pocket secretary-- it handles almost every low-grade computer task you're likely to encounter. (Bigger tasks are the province of the team decker.)
Tools can be useful; at the very least, a firearms kit will enable you to do regular maintance on your guns, and swap out some accessories.
If you can afford it, a bug scanner and white noise generator are always nice to have. Being able to talk securely is always a plus.
High rating medkits and a Docwagon contract are generally worthwhile investments. If nothing else, a rating-6 medkit is a cheap backup healer on your team.
Get yourself a car if you can; you don't need to load it out with mods, since that's the rigger's job. However, you do want to get a transponder library and morphing license plate; you also want photovoltaic paint if you can afford it. These mods are pretty cheap, and they make your vehicle virtually untrackable; at least, for any use you'll be putting it to. If you're SINless, these mods are practically a must; they'll prevent any casual police stops.