If you are new to crypto and you have planned to invest into crypto coins seeing bitcoin's growth, then pl invest your full amount into BITCOIN. Bitcoin will certainly yield you plenty in 6 months as per your target. But in case you have an experience in trading, then go for top 5 best coins dividing $1000 into 5 portion into each coin you have chosen. As all the top most coins follow bitcoin, certainly they will in turn provide you a lump of profits on holding them for 6 months.