first how much electric cost in your place, skip if 0.1$+, from 0.05$ then starting to makes profit, remember minimum profit is 100% from electric price
at this point and for safe long term future get asic sha256 at best price/performance and check stock whic asic ready in your area living/country,
i wouldnt recomend buy asic oversea without warranty. buying gpu is safer bet if your plan fail in the future you can sell it to gamer.
asic = no resale value but at this very moment is most profitable for long term use and easy to manage,
gpu = has resale value if you bought second hand, and wait till bullrun to activate the miner, at this point you can gain knowledge and prepare for next bullrun. just try buy 2 gpus instead for learning