For me Robada and Orangered overlap, Afghanistan is later (but overlaps a bit with R and O), and Tomcot is earlier. However, I was told that up north bloom times are much more condensed. Here is what @mamuang observed:
4/14 Tomcot
4/15 OrangeRed and Robada
4/17 Moniqui and Hoyt Montrose
4/18 Zard
At my place, Tomcot and Zard bloom a full month apart, and in Zone 6 the difference is just 4 days. Based on these data, you should not worry about overlap.