the game looks very nice, but it runs very very slow on my system.
And the installed size is 158MB.

Suggestion For an Indy game:
-dont try to reach AAA game level detail and effects.

This will on the one Hand overload you with work to
make a complete game, thus killing motivation
, and it is not quick and easy to run on many
systems.

There are too many professional titles that look better,
are complete and run much faster.

-> unless you use this as showcase for getting a modelling job in a company.
Then this approach is fine.
I suggest to program an automatic camera ride through the scene, wich also helps staging effects easier.