Given ONLY this list of ETFs, prepare a portfolio of at least 4 ETFs to maximize return from today until December 10, 2020. You have $100k of cash to buy etfs.

No single ETF may comprise more than 30% of the portfolio. Please give specific reasons why you chose each ETFs.

ETF LIST:

GOVT iShares Core US Treasury Bond ETF

TIP iShares TIPS Bond ETF

AGG iShares Core US Aggregate Bond

AGZ iShares Agency Bond ETF

LQD iShares iBoxx $ Investment Grade Corp Bond ETF

IGHG ProShares Investment Grade Interest Rate Hedged ETF

HYG iShares iBoxx $ High Yield Corporate Bond ETF

FLOT iShares Floating Rate Bond ETF

BKLN PowerShares Senior Loan ETF

MBB iShares MBS ETF

CMBS iShares CMBS ETF

MUB iShares National Muni Bond ETF

BAB PowerShares Build America Bond ETF

PFF iShares US Preferred Stock ETF

CWB SPDR Bloomberg Barclays Convertible Securities ETF

IGOV iShares International Treasury Bond ETF

EMB iShares JPMorgan USD Emerging Markets Bond ETF

LEMB iShares Emerging Markets Local Currency Bond ETF