Looks good aleg8r,
You shouldn't have to worry about the tris and 5 sided polys. Edge termination isn't usually recommended, but I use it all the time. Once you subdivide the mesh for rendering, all of these issue will be dealt with. As long as you place them wisely (such as on long flat area, or areas that are not going to be seen) You should be fine. Done place them on Curves or rounded areas, Or areas where several forms might meet/intersect.
Nice model.
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