Reporter 400 should meet your requirement if you are shooting for event. However to add another heavy lens like 70-200, I would suggest to go for backpack.
some shots are overexposed (glown loose detail) and background is dark which lost the ambient detail ...
overall is nice and need more improvement on the composition ..
a flash is useful if you are shooting :
- your friends and yourself against a nice scenery or indoor
- indoor event
maybe you cut down the macro lens and bring a ext tube instead to lighten your load. Bring a lighter tripod too ...
Nice shots esp. 2nd shot, good composition due to the leaf background but object is slightly overexposed at the bright side. Try to compensate -1/3 exposure and fill-in flash to make the shot look better.