Moving is naturally a very stressful process.

I would like to stress, do not do ANYTHING unless you fully understand what it is going to cost you, (all the fees, interest, pre-payment penalties, etc.)

I stress licensed and insured.  

Ask your friends who they used for an agent and they will guide you through the buying process for your area.I can't stress enough about learning though.

I had the same "bird in hand" feeling and it was stressing me out.

Being a property manager can be hectic & stressful at times.

Prices were roughly a million dollars  for a 2 Family home in this neighborhood at the time (Much higher by now) and there was no way my landlords 20K will be enough for a down payment so was looking to buy with someone as a partner I would live in half and he would live in half.I ended up finding a 3 Family for 930K But at the last minute was outbid by a cash buyer :( (The guy that went in to contract ended up calling me that he does not want the property and wants me to buy it but told him to late)Search continues I ended up finding a deal on zillow for 750K Called the broker a million times could not get through finally i got through he told me he already had 50 calls on the house that day and he is stressed out ....... and he can only show it to me next week, I saw that with out being aggressive i would accomplish nothing so i asked him if he can be my buyers agent and he will get double commission. this opened all doors for me and he gave me a showing for the following day.So we went to look at it with my wife it needed allot of work but for 750K it was a bargain, I told the broker on the spot i will take it, but he tells me he will need to wait a week till everyone sees it, I wanted to avoid a bidding war so I told him i would offer him 800K if they except my offer now Long story short a neighbor bid up till 815K so i told the broker that are deal was for 800K and i pay you a fee, but If I am taking it now there is no way I can pay you an extra fee, he understood me and told me to put his fee torwards the house and he does not need a fee from me  I ended up getting a contract for 825K I ran around to every person that I know borrowed like crazy and came up with 200K and after 3-4 Months we closed in September 2015 with out a partner.

Looking to move into Multi Family investing in the vey near future.

This can be stressful as you pointed out due to the tight 45 calendar day identification period, but probably the best strategy from a profit point of view. 

Be conservative, don't factor in appreciation, and stress test the deal by looking at how market corrections could effect it.