I've heard I can open a home equity line of credit but is that my best option.

Do you have a line of credit on your personal house?

They might do this themselves if self managed, but even large 3rd party management companies will change their accounting practices in preparation for a sale if the owner so desires.  

I am presuming you are not taking a secured lien on real property (you should)...I would not do this deal unless you are prepared to reduce your 100k liquid to 5k and monthly payments of 833.33 a month for who knows how long.If I'm a company 60 days away from a 12 million dollar infusion, I don't put myself in the position of needing a 100,000 band-aid.  

Here are the duties that can be performed according to the FREC:Permissible Activities of an Unlicensed AssistantUnlicensed assistant is defined as support stafffor a real estate corporation or other licensed individuals.Answer the phone and forward callsFill out and submit listings and changes to any multiple listing serviceFollow-up on loan commitments after a contract has been negotiated and generally secure the status reports on the loan progressAssemble documents for closingSecure documents (public information) from courthouse, utility district, etc.Have keys made for company listings, order surveys, termite inspections, home inspections and home warranties with the.licensed employer's approvalWrite ads for approval of the licensee and the supervising broker, and place advertising (newspaper ads, update web sites, etc); prepare flyers and promotionalinformation for approval by licensee and the supervising brokerReceive, record and deposit earnest money, security deposits and advance rentsOnly type the contract forms for approval by licensee and supervising brokerMonitor licenses and personnel filesCompute commission checksPlace signs on propertyOrder items of repair as directed by licenseePrepare flyers and promotional information for approval by licensee and supervising brokerAct as a courier service to deliver documents, pick-up keysPlace routine telephone calls on late rent paymentsSchedule appointments for licensee to show a listed propertyBe at an open house for: o Security pulposeso Hand out materials (brochures)Answer questions conceming a listing from which the answer must be obtained from the licensed employer-approved printed information and is objective innature (not subjective comments)Gather information for a Comparative Market AnalysisGather information for an appraisalHand out objective, written infonnation on a listing or rental

Consider the debt that will weigh on your credit as well.

Is it possible to get a line of credit on a rental property these days? 

Cozy does charge for some things (i.e. credit checks, express payments), but their basic rent collection service really is free and in another discussion here on BP they said they intend to keep it that way. 

My wife has excellent credit mine is good.

We have been on the sidelines for too long, but we have been preparing, reading and driving for dollars over the past couple of months.