From Security+ book by Sybex:
"One of the nice things about technology is that it's always changing. One of the bad things about technology is that it's always changing."
Considering your current certs, I'd say skip the Server+ and choose between Sec+ and CCNA (CCENT first) and upgrading your MCSE. The Cisco or Microsoft road is usually more valuable in terms of both a resume and skill enhancer.
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"One of the nice things about technology is that it's always changing. One of the bad things about technology is that it's always changing."