I doubt if you'll get anywhere on the venue (location) issue since all three counties seem to be within reasonable driving distance of each other.
As for the statute of limitations, that's a tough question.
You probably won't need your copy of the lease. The Plaintiff has already given you enough information.
You defaulted on March 1 2013. You have a document showing that. You are apparently not disputing that date. Right?
The lawsuit was filed with the court on March 2, 2017.
To me, that's 4 years and 1 day.
However, here's the wording of the statute:
http://law.justia.com/codes/texas/20...-b/chapter-16/CIVIL PRACTICE AND REMEDIES CODE - TITLE 2. TRIAL, JUDGMENT, AND APPEAL - SUBTITLE B. TRIAL MATTERS - CHAPTER 16. LIMITATIONS - SUBCHAPTER A. LIMITATIONS OF PERSONAL ACTIONS
Sec. 16.004. FOUR-YEAR LIMITATIONS PERIOD. (a) A person must bring suit on the following actions not later than four years after the day the cause of action accrues:
(3) debt
I found an article on Texas SOLs and in it found the following on Page 2:
http://www.cooperscully.com/uploads/...%20-%20TLS.pdfB. When Does the Statute of Limitations
Accrue?
Accrual is the date when the statute of
limitations begins to run, or, stated another way,
when the plaintiff first has a legal claim. The
accrual date can be defined by statute or under
the common law. Under Texas’ common law,
there are two methods for determining the
accrual date: the legal-injury rule and the
continuing-tort doctrine. When a claim accrues
is a question of law for the courts to determine.
Under the legal-injury rule, a plaintiff’s
cause of action accrues on the date when the
defendant’s act causes a legal injury. Lubbock
Cty. v. Trammel’s Lubbock Bail Bonds, 80
S.W.3d 580, 585 (Tex. 2002). Even if the legal
injury is very slight, the statute of limitations
begins to run. Atkins v. Crosland, 417 S.W.2d
150, 153 (Tex. 1967).
According to that the SOL begins to run ON THE DATE when your default causes a legal injury which, according to the Plaintiff was March 1 2013.
I haven't had time to read those case decisions. You'll have to whether I read them or not because you'll have to raise the SOL as an affirmative defense and move for dismissal if the Plaintiff is a day late and you'll have to quote portions of the decisions that apply.
You can find the cases on Google Scholar. There may be others. We can go into that later.
https://scholar.google.com/scholar?hl=en&as_sdt=4,44
By putting the case name in the search bar.
Meantime, tell me more about the summons and complaint.
Are you instructed to just appear in court or are you instructed to file an answer within a certain number of days. If the latter, give me the date you were served and the number of days you have to file an answer.
And please list all of the allegations in the complaint. Quote them word for word.
Keep in mind that I'm not an attorney and a don't give legal advice but I will endeavor to steer you in a helpful direction.

