I'd say go where your motivation takes you. Let's say you are burning to do idea 1 - so do it! Then you may get burnt out for the weekend and not want to do ide

I'd say go where your motivation takes you. Let's say you are burning to do idea 1 - so do it! Then you may get burnt out for the weekend and not want to do idea 1, so start idea 2. Mainly keep it very focused, don't over-engineer, use the customer-development framework and keep refining to the very simple core of the product. I think these things take time so you will be glad that you flowed with your momentum. In a couple months I'm sure you will gain the experience to answer this question unequivocally.