Questions Related to Upgrading Cisco 1720 Router

rtr1720#show ver                
Cisco Internetwork Operating System Software                                            
IOS (tm) C1700 Software (C1700-Y-M), Version 12.1(3)XT2, EARLY DEPLOYMENT RELEAS                                                                                
E SOFTWARE (fc1)                
TAC:Home:SW:IOS:Specials for info                                
Copyright (c) 1986-2001 by cisco Systems, Inc.                                              
Compiled Fri 23-Feb-01 12:39 by detang                                      
Image text-base: 0x800080E0, data-base: 0x806B0B24                              

ROM: System Bootstrap, Version 12.0(3)T, RELEASE SOFTWARE (fc1)
ROM: C1700 Software (C1700-Y-M), Version 12.1(3)XT2, EARLY DEPLOYMENT RELEASE SO
FTWARE (fc1)

rtr1720 uptime is 2 days, 5 hours, 52 minutes
System returned to ROM by power-on
System image file is "flash:c1700-y-mz.121-3.XT2.bin"

cisco 1720 (MPC860) processor (revision 0x301) with 17408K/3072K bytes of memory
.
Processor board ID JAD04010Z09 (1678117116), with hardware revision 0000
M860 processor: part number 0, mask 32
Bridging software.
X.25 software, Version 3.0.0.
1 FastEthernet/IEEE 802.3 interface(s)
1 Serial network interface(s)
WIC T1-DSU
32K bytes of non-volatile configuration memory.
4096K bytes of processor board System flash (Read/Write)

Configuration register is 0x2102

Please affirm understanding gained from reviewing other Ex/Ex answers related to my need to upgrade our used (& discontinued) Cisco 1720 Router shown above to gain SSH remote admin capability?

TRUE/FALSE
My Cisco 1720 router has only 4Mb of FLASH & 20Mb of RAM?

My current image file c1700-y-mz.121-3.XT2.bin does not support SSH?

Upgrading to IOS Release 12.2(34a) with Feature Set IP PLUS IPSEC 3DES (image file c1700-k9sy-mz.12.2-34a.bin) would allow secure remote administration of this router via SSH ?

Upgrading to IOS Release 12.2(34a) with Feature Set IP PLUS IPSEC 3DES (image file c1700-k9sy-mz.12.2-34a.bin) would require I upgrade the Cisco 1720 router memory to a minimum of 32Mb RAM and 8Mb of FLASH?

I will have to purchase a support contract from Cisco in order to download the newer image file with the feature set I need, correct?

I will need to purchase the Cisco 1720 router memory upgrade modules (FLASH & RAM) from an authorized Cisco reseller to qualify for support on the router?

Thanx tons to any ExEx Experts who can give thumbs up or down to my above listed suppositions.  I bought the Cisco 1720 router used, added the WIC T-1 DSU card and installed it as the perimeter router between ISP & our LAN.  I'm guessing I probably should have bought a higher end router for this purpose but I thought the PIX and the Catalyst switch downstream could do the heavy lifting?
dalvis