Software :: Right Order And Grouping Of Sudo, Nice, Output Redirection And "&" To Start A Program?

I have an X11 GTK program, let's name it "foo".I would like to start it from command line, either from a text console, or from an ssh log-in. I want to run foo with Administrator privileges and in higher priority, and I need redirect standard output and standard error. Standard errors must go to syslog, except "libglade Warning" messages and empty line messages. Standard output is redirected to a file.I wrote a script, called "foo-start". The "foo" program must run continously, so the "foo-start" script should not wait for "foo"'s termination.The scrip actually looks likelike this:

cd "FOO'S DIR"
(sudo nice --10 ./foo --display=localhost:0 &) 3>&1 1>foo-output.log 2>&3 | grep . | grep -v lobglade-WARNING | loggerr -p local7.err -t foo &

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