Being a High Output MC the SAE at 2.5mV can go straight into your MM input. Mine does. Spec here: http://www.jims-sae-site.com/sae_phono.htm
The 33 is a different matter, as you rightly conclude.
You can go with a SUT or a Headamp. I've used a Rothwell Headspace Moving Coil Headamp to great effect (I still have it). http://www.rothwellaudioproducts.co....c_headamp.html
The great benefit here is that you can change the Gain and Impedance settings inside via dip switches, so you're not tied to a single cartridge. I'm not the greatest authority on SUT's but most are built with a particular set of parameters in mind and may restrict future cartridge choices.
The argument of SUT vs Headamp is well aired. You can find a lot on AOS regarding the subject using the search function.
Source: Orbe SE / SME IV / Cadenza Bronze
Source: WD NAS / Cyrus Stream X2 / Chord DAVE
Source: Oppo UDP-205 (CD/DVD-A/SACD)
Amplification: Icon Audio PS 3 Sig Phono + Audio Research LS27 + Musical Fidelity A5cr Power Amp
Loudspeakers: ProAc Response D28
Cables/stands: Mark Grant G1500HD + Linn K20 + Cat 5e
Other bits: Okki Nokki keeping things clean