I didn't realize that in your quetion that had already mentioned the streamline (I missed that s even though you capitalized it), but I think it is an excellent program for your needs. It shouldn't take as long as a USDA loan takes.
The only issue you might have with the streamline is that you have to be able to move in to the home within 30 days of closing.
If your current lender has experience with it you can ask hem how long it generally takes him. I can't imagine it would take more than 45 days. A USDA will likely end up taking 60 or more days.
Hope this helps but feel free to post more info or questions.
Another thing to consider when choosing a loan program is the time required for and availability of each loan program. The USDA program can take weeks to several months to get approved and you should acquire this approval before you write an offer on a home. The USDA loan also is subject to availability within your area. The funds allocated for your county may have been spoken for. This may require an indefinite wait for a new allocation to be released. There are also loan limits in each county for both the USDA and FHA programs.
Remember that USDA loans, especially USDA direct loans, have an income limit and also require that the property be zoned rural. FHA loans do not have these limitations. That is why more people use FHA than USDA. The USDA direct loans are designed for people who have moderate to low income for their area AND they must buy a rural property.
You can only do repairs (like those you mentioned) that don't need a consultant.
It is probably the most convenient construction program available.