So I'll be leaving for a training mission for 3-4 weeks. I'll leave on a Monday and will be bottling what I have in my fermenter the day before. This will ensure my first batch will condition for at least that long. (honestly ill be tapping Ito it as soon as I get back). What I'd like to do is as soon as I get my first batch into the bottles I'd like to cook up a new batch and get it fermenting while I'm gone. This will make sure I have a new batch ready to go into bottles when I get back thus eliminating any possible long lag time between my first and second brews. Will this cause a problem leaving a batch in the primary for that long? I'll have to hook up a blow off tube to make sure there's no overflow from the airlock. I wouldn't be around to clean it up and the wife wouldn't be willing to take on those kinds of duties. Does anyone foresee any problems with this plan.