Originally Posted by AndrewD
I would not recommend doubling up a stovetop AG recipe for your first one. Aside from the long heating/boiling times, that kit has you mashing and sparging with normal household pots and strainers. You might find that doubling the amount of grain would be too large for a household pot/strainer.
I think you should go for the 1gallon kit you linked, see what you think, and if you want to make bigger batches, you could start investing in a brew in a bag (BIAB) set up or regular all grain at that point. I've never done BIAB but people rave about it for 3g batches and larger. 30 dollars for a 1g batch of beer is expensive compared to regular all grain brewing, but as far as an introductory lesson into the concepts of mashing and sparging, I think it's pretty cheap.
Being European, I have no idea about the cost of ingredients where you're at, but the rest I can heartily recommend. I bought a contraption normally used to keep large quantities of mulled wine warm which I use to brew, however, I have done my first batch (6g) successfully on my stove. Lautering with normal household equipment can be a bit of PITA though - decide what batch soze you want to make and invest in an effective lautering system early (the two buckets method gives you a working lauter tun on the cheap).