there are different pros and cons. If Eli were a little older, then he could be of more help and there'd be less chance of much sibling rivlary, but there is the idea of having them closer together, then they can be close in age, play iwth each other a little more, you get to condense diaper age down to a smaller span of years etc.
There is no right or wrong time. Like the old saying about waiting to have children until you can afford, them, it never happens. Likewise, if you wait, then what happens if you don't conceive right away. trust your gut on this one and don't over-think it, is my suggestion.