Hi and welcome to SaleHoo REP :)
Nice to have you with us!
This has been discussed a number of times on the the forum and I'm sure on other forums as well.
Yes, your customer will receive 2 packages whether you like it or not. But it is also advisable that you mention in your listings where your items will be shipped from so your customer will pretty much have an idea that they will be receiving separate packages :)
The key thing there is having a shopping cart that will allow you to facilitate the check out smoothly for multiple suppliers and I think the following posts will help you with that -
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Hope this helps, somehow...