My opinion, don't let this be your first experience of wheel building.
Wheel is worth more as is on ebay, you can buy what you're needing for a couple of quid from a community bike shop (my local has vuelta airline with 7spd block in near unused condition for £10. alloy wheels are a plenty and easy to get hold of with iso freewheel thread. Flip-flops have pretty much constant value for first time converters looking for cheap parts)
My opinion, don't let this be your first experience of wheel building.
Wheel is worth more as is on ebay, you can buy what you're needing for a couple of quid from a community bike shop (my local has vuelta airline with 7spd block in near unused condition for £10. alloy wheels are a plenty and easy to get hold of with iso freewheel thread. Flip-flops have pretty much constant value for first time converters looking for cheap parts)