I'd take the job too - and then get a flexible parttime job. There is nothing like government benefits. There is room for advancement and the pay is good.
As I mentioned before, working at the post office "saved" my mom. She worked as an assistant postal clerk for 25 years (yes, it took that long for the postmaster job - it was a VERY small town) to come open. But she worked that one day per week for all those years, and then got the postmaster job when she was 55 and retired with full retirement at age 62. She's now 85 and if not for that postal job, she would be living on basically social security ONLY, as her other job for those 25 years, had NO retirement.
Also, my hubby worked at a government job for many years, and he became completely disabled due to medical illness (not a job injury) and was able to get his medical retirement from the government - which has saved our butts in terms of finances since he is unable to be well enough to work.
I KNOW it won't take 25 years for you to get on fulltime
but my point is that you never know what will happen in the future and when you might need all the retirement benefits you can get!!!
Of course, the decision is yours - but I would lean heavily toward the government job.
Good luck!