My partner and I recently started riding to and from work. The ride is about 7-8 miles one way on poorly kept bike lanes with trash, glass and various repairs. I ride a Specialized Hardrock and she rides something similar made by Giant (both entry level).

We will both be riding when it is dark out, so the plan is to buy some lights. I have done some reading here and am thinking this for the rear and have not settled on front lighting.

I want to get us seat bags with the necessities as well as a mini-pump. We are on a budget and hoping to avoid spending a lot of money on this endeavor. Does anyone have recommendations on what to carry and specific brands that can be purchased without costing an arm and a leg? As of now we have the bikes and that is it.

I was thinking of getting a seat bag and sticking the following in it:

Spare tube
Patch kit
Tire levers
metric wrench set
screw driver

Any recommendations on the well priced seat bag, mini-pump and patch kit? Also, does it look like I am missing anything?

The last question is: How secure are seat bags? I take my bike up to my office, but she has to lock it up outside. I doubt anything will go missing where she parks, but want to insure that it doesn't. Any tips on this aside from bringing it inside with her?